How a car works

All partsBMW M4 CSLS58 engineTiming chain › Chain guides

Chain guides

Part of Timing chain · about $120 to replace

What it is

Plastic slipper guides.

What it does

Guide the chain run and damp vibration.

How it fails

Brittle after 150,000 km; plastic in the sump is the sign.

MaterialPA66 glass-filled
Spec2 guides + 1 tensioner rail
Chain guides highlighted on the car

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